クラゲ (体制)
1. Medusa (biology)In biology, a medusa is a form of cnidarian in which the body is shaped like an umbrella, in contrast with polyps. Medusae vary from bell-shaped to the shape of a thin disk, scarcely convex above and only slightly concave below. The upper or aboral surface is called the exumbrella and the lower surface is called the subumbrella; the mouth is located on the lower surface, which may be partially closed by a membrane extending inward from the margin (called the velum).
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Read “Medusa (biology)” on English Wikipedia
Read “クラゲ (体制)” on Japanese Wikipedia
Read “Medusa (biology)” on DBpedia
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